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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415)364-9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(510)686-9689 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> MPbS Services.............. ::: . ...:.. ;... ........:.�.:..::.:.::.:>.::::::.:.. ........ . . .. ...:: ...;.. <br /> Client protect Ib Unocal#0788,8203 E. 11th St.,Tracy Sampfe5 <br /> X. <br /> 2401 Stanwell Dr., Ste. 300 Matrix Descript: Water Received: Feb 13, 1995;'; <br /> Concord, CA 94520 Analysis Method: EPA 5030/8015/8020 Reported: Mar 1, 19951" <br /> Attention: Sarkis Karkarian First Sample#: 502-0798 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Sample Sampie Chromatogram DL Mutt Date Instrument Surrogate <br /> Number Description Pattern Factor Analyzed ID Recovery, % <br /> (OC Limits: <br /> 70-130%) <br /> 502-0798 U-1 -- 1.0 2/22/95 HP-4 95 <br /> 502-0799 U-2 -- 1.0 2/22/95 HP-4 92 <br /> 502-0800 U,3 -- 1.0 2/22/95 HP-4 94 <br /> 502-0801 U-4 -- 1.0 2/22/95 HP-4 93 <br /> • 502-0802 U-5 Unidentified 5.0 2/22/95 HP-4 94 <br /> Hydrocarbons <C6 <br /> 502-0803 U-6 Gasoline 1.0 2/22/95 HPA 75 <br /> 502-0804 U-7 -- 1.0 2/22/95 HP-5 90 <br /> 502-0805 U-8 -- 1.0 2/22/95 HP-5 89 <br /> 502-0806 U-9 -- 1.0 2/22/95 HP-5 87 <br /> 502-0807 U-10 -- 1.0 2/22/95 HP-5 92 <br /> SEQUOIA ANALYTICAL, #1271 Please Note: <br /> *"Unidentified Hydrocarbons <C6"refers to unidentified peaks in the EPA 9010 range. <br /> *Signature on File <br /> Alan B. Kemp <br /> Project Manager <br /> 5020798.MPD <2> <br />